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Entry version 79 (02 Jun 2021)
Sequence version 1 (01 Oct 2000)
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Protein

Probable cell-surface antigen I/II

Gene

paaA

Organism
Streptococcus criceti
Status
Reviewed-Annotation score:

Annotation score:3 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Protein inferred from homologyi <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Probable cell-surface antigen I/II
Alternative name(s):
PAa1 Publication
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:paaA
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiStreptococcus criceti
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri1333 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiBacteriaFirmicutesBacilliLactobacillalesStreptococcaceaeStreptococcus

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywords - Cellular componenti

Cell wall, Secreted

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section denotes the presence of an N-terminal signal peptide.<p><a href='/help/signal' target='_top'>More...</a></p>Signal peptidei1 – 38Sequence analysisAdd BLAST38
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_000037911939 – 1623Probable cell-surface antigen I/IIAdd BLAST1585
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section describes a propeptide, which is a part of a protein that is cleaved during maturation or activation. Once cleaved, a propeptide generally has no independent biological function.<p><a href='/help/propep' target='_top'>More...</a></p>PropeptideiPRO_00003791201624 – 1653Removed by sortasePROSITE-ProRule annotationAdd BLAST30

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei1623Pentaglycyl murein peptidoglycan amidated threoninePROSITE-ProRule annotation1

Keywords - PTMi

Peptidoglycan-anchor

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
Q9LBG3

Database of comparative protein structure models

More...
ModBasei
Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section indicates the positions and types of repeated sequence motifs or repeated domains within the protein.<p><a href='/help/repeat' target='_top'>More...</a></p>Repeati150 – 224Ag I/II A 1PROSITE-ProRule annotationAdd BLAST75
Repeati225 – 306Ag I/II A 2PROSITE-ProRule annotationAdd BLAST82
Repeati307 – 388Ag I/II A 3PROSITE-ProRule annotationAdd BLAST82
Repeati389 – 470Ag I/II A 4PROSITE-ProRule annotationAdd BLAST82
Repeati471 – 552Ag I/II A 5PROSITE-ProRule annotationAdd BLAST82
Repeati553 – 634Ag I/II A 6PROSITE-ProRule annotationAdd BLAST82
Repeati960 – 998P11 PublicationAdd BLAST39
Repeati999 – 1037P21 PublicationAdd BLAST39
Repeati1038 – 1066P31 PublicationAdd BLAST29

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni56 – 93DisorderedSequence analysisAdd BLAST38
Regioni107 – 137DisorderedSequence analysisAdd BLAST31
Regioni206 – 616Heptad repeats of Y-[EQ]-X-X-L-A-X1 PublicationAdd BLAST411
Regioni629 – 951V-region (lectin-like)By similarityAdd BLAST323
Regioni975 – 1073DisorderedSequence analysisAdd BLAST99

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a short (usually not more than 20 amino acids) conserved sequence motif of biological significance.<p><a href='/help/motif' target='_top'>More...</a></p>Motifi1620 – 1624LPXTG sorting signalPROSITE-ProRule annotation5

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes the position of regions of compositional bias within the protein and the particular type of amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi117 – 131Polar residuesSequence analysisAdd BLAST15
Compositional biasi978 – 994Pro residuesSequence analysisAdd BLAST17
Compositional biasi1015 – 1033Pro residuesSequence analysisAdd BLAST19
Compositional biasi1054 – 1072Pro residuesSequence analysisAdd BLAST19

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the antigen I/II family.Curated

Keywords - Domaini

Repeat, Signal

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.60.530.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR026345, Adh_isopep-form_adh_dom
IPR041324, AgI/II_N
IPR032300, Antigen_C
IPR021197, Cross-wall-target_lipo_motif
IPR013574, Glucan-bd_C/Surface_Ag-I/II_V
IPR019948, Gram-positive_anchor
IPR019931, LPXTG_anchor
IPR036234, SA_I/II_PAC_V_sf
IPR009578, Surface_Ag_rpt

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF18652, Adhesin_P1_N, 1 hit
PF17998, AgI_II_C2, 1 hit
PF16364, Antigen_C, 1 hit
PF08363, GbpC, 1 hit
PF00746, Gram_pos_anchor, 1 hit
PF06696, Strep_SA_rep, 6 hits

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF74914, SSF74914, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR04228, isopep_sspB_C2, 1 hit
TIGR03726, strep_RK_lipo, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51965, AG_I_II_AR, 6 hits
PS50847, GRAM_POS_ANCHORING, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

Q9LBG3-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKRKETFGFR KSKISKSLCG ALLGTAIVVS VAGQRALAED MTTSTTSAVD
60 70 80 90 100
TTAVVGTETG NPATNLPEKQ ADSSSQAEAS QAQAEQKTGS MPVDVATTEL
110 120 130 140 150
DEAVKSAAEA GVTVSQDETV DKGTVGTSQE ADEKSGEIKA DYSKQAETIK
160 170 180 190 200
ITTETYKADV AANQSETNRI NQENAAKKAQ YEQDLAANKA EVERITNKNA
210 220 230 240 250
QAKADYEAKL AQYQKELAAV QQANSDNQAA YAAAKDAYEK ELARVQKANA
260 270 280 290 300
DAKAAYEQAV AANTAKNEQI KAANAAIQQR NAQAKADYEA KLAQYQKDLA
310 320 330 340 350
AVQAGNAANE ADYQAKKTAY EQELARVQAA NAAAKTAYEQ AVAANTAKNE
360 370 380 390 400
QIKAANTAIQ QRNAQAKADY EAKLAQYQND LAVVQAGNAA NEADYQAKKT
410 420 430 440 450
AYEQELARVQ AANAAAKTAY EQAVAANTAK NEEIKAANEA IKQRNAQAKA
460 470 480 490 500
DYEAKLAQYQ KDLAAVQTGN AANEADYQAK KTAYDQELAR VQKANADAKA
510 520 530 540 550
AYDQAVKDNQ AKNAEIAAEN AAIRQRNAAA KADYEAKLAQ YQKDLAAVQK
560 570 580 590 600
ANAANEADYQ AKKLAYETEL ARVQKANADA KAAYDQAVKD NQAKNAEIAA
610 620 630 640 650
ENAAIRQRNA AAKADYEAKL AKYQQDLTQY QKDFADYQSK LKAYEDAQAA
660 670 680 690 700
YKAALAELEK HKNDDGYLPS PESQPFIFEQ EKNATLEITS GDKVYNADEF
710 720 730 740 750
YAEADKLDYI KADTLFNTEK RRVAYEHFKG GIQDSADWPG KRVFLPKGKP
760 770 780 790 800
VVARYSNLKN SELNGKKIAS AEFIYTLKDT SLNADKIPAM LYDDPTQTIY
810 820 830 840 850
YFEFFGSQSI DVDIKFYDED GNKIDATGAL LDFSSLNRGH GWPQYNGINT
860 870 880 890 900
IEKVNYHTGT AIEINGSSVK DNGDGLYAAT PNYTKANQSR FESNEWDTTN
910 920 930 940 950
SPVNWYGAIV GKQTGPDIKF TLSAENASGI WFAFDSKIKA KDIPNKPMES
960 970 980 990 1000
EPTPPVAPTQ PLEPVYEVEK DLEPVPVEPN YDPEPTPPTR TPDQPEPNKP
1010 1020 1030 1040 1050
DEPNYEVEKP SEPAPIEPNY DPEPTPPTRT PDQPEPNKPD EPNYEVEQPQ
1060 1070 1080 1090 1100
EPAPVEPKYD PEPTPPVDPV YEKIPDPVNV PTVRYHYYKL AIQPGVTKAI
1110 1120 1130 1140 1150
KNSDNLDIDK TLVAKQSTVK FQLLTADLPA GRPETTSFVL VDPLPSGYQF
1160 1170 1180 1190 1200
NLEATKVASP GFDTSYDEAT NTVTFTATAE TLANLNKDLT KTVSTIYPTI
1210 1220 1230 1240 1250
VGQVLNDGAI YTNNFTLTVN DAYGIKSNIV RVTTPGKPND PKHPNNSYIK
1260 1270 1280 1290 1300
PHKVNKNENG VVIDGKAVLA GSTNYYELTW DLDQYKGDSS GKESIQKGFF
1310 1320 1330 1340 1350
YLEDYPEEAL DLRPDLVKIT DTSGKAVTGI SVTDYASLEA APEMVREMLQ
1360 1370 1380 1390 1400
KANITPKGAF QLFTADNPQA FYDTYVVKGI DLTIVTPMVV KAEMGKTGGG
1410 1420 1430 1440 1450
YENRAYQIDF GNGYESNPVI NNVPKIDPKK DVTLTLDPAD LTNIDGQTIA
1460 1470 1480 1490 1500
LNQTFNYRLI GGIIPPKHAE ELFEYSFDDD YDQTGDKYTG QYKAFAKVDF
1510 1520 1530 1540 1550
TLKDGTIIKA GTDLTQYTKA QIDEVNGRIL VSFKEDFLRS VSVDSAFQAE
1560 1570 1580 1590 1600
VYLQMKRIAV GTFENTYVNT VNGITYSSNT VRTSTPEPKT PEDPRTSHTV
1610 1620 1630 1640 1650
VYRPIKDKTY QPAPPQTGQL PATGDANNAY MPLLGLVSLT AGFSLLGLRR

KKN
Length:1,653
Mass (Da):180,863
Last modified:October 1, 2000 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i93F28E215BF598DE
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
AB042239 Genomic DNA Translation: BAA95000.1

NCBI Reference Sequences

More...
RefSeqi
WP_004225946.1, NZ_UHFB01000005.1

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AB042239 Genomic DNA Translation: BAA95000.1
RefSeqiWP_004225946.1, NZ_UHFB01000005.1

3D structure databases

SMRiQ9LBG3
ModBaseiSearch...

Family and domain databases

Gene3Di2.60.530.10, 1 hit
InterProiView protein in InterPro
IPR026345, Adh_isopep-form_adh_dom
IPR041324, AgI/II_N
IPR032300, Antigen_C
IPR021197, Cross-wall-target_lipo_motif
IPR013574, Glucan-bd_C/Surface_Ag-I/II_V
IPR019948, Gram-positive_anchor
IPR019931, LPXTG_anchor
IPR036234, SA_I/II_PAC_V_sf
IPR009578, Surface_Ag_rpt
PfamiView protein in Pfam
PF18652, Adhesin_P1_N, 1 hit
PF17998, AgI_II_C2, 1 hit
PF16364, Antigen_C, 1 hit
PF08363, GbpC, 1 hit
PF00746, Gram_pos_anchor, 1 hit
PF06696, Strep_SA_rep, 6 hits
SUPFAMiSSF74914, SSF74914, 1 hit
TIGRFAMsiTIGR04228, isopep_sspB_C2, 1 hit
TIGR03726, strep_RK_lipo, 1 hit
PROSITEiView protein in PROSITE
PS51965, AG_I_II_AR, 6 hits
PS50847, GRAM_POS_ANCHORING, 1 hit

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiPAA_STRCG
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: Q9LBG3
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 7, 2009
Last sequence update: October 1, 2000
Last modified: June 2, 2021
This is version 79 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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